Paper-finishing machine.



P. w. BIDWELL.

PAPER FINISHING MACHINE.

v v APPLlCATION FILED APR- 2.1915- 1 1 lfi q PatentedSept. 28, 1915.

4 SHEETSMSIIEET I.

WITNESSES: INVENTOR, MW PM; fi ffizfiwai,

' BY I f ATTORNEY;

! P. W. BIDWELL.

PAPER FINISHING MACHINE.

APPLICATION FILED APR. 2. 1915.

1 9 1 ififigfi Patented. Sept. 28, 1915.

4 SHEET SSHEET 2.

WITNESSES: 1N VENTOR 6W0. Paw Wfizdzwzz;

ATTORNEY.

P. W. BIDWELL.

PAPER FINISHING MACHINE.

APPLICA ION FILED mi. 2, I915.

wmw Patented Sept. 28, 1915.

4 SHEETS-SHEET 3.

WITNESSES:

11v VENTOR ATTORNEY.

Pam;

P. W. BIDWELL. PAPER FINISHING MACHINE.

APPLICATION FILED APR. 2, 1915.

I Patented Sept. 28, 1915.

4 SHEETSSHEET 4.

WITNESSES; INVENTOR,

f Edd Wjiz'amsfl,

ATTORNEY.

ara

PAPER-FINISHING MACHINE.

Specification of Letters Fatent.

Patented Sept. 28, 1915.

Application filed April 2, 1915. Serial N0. 18,848.

To all whom it may concern."

Be it known that I, PAUL W. BIDWELL, a citizen of the United States ofAmerica, and resident of Holyoke, in the county of Hampden and State ofMassachusetts, have invented certain new and useful Improvements inPaper-Finishing Machines, of which the following is a full, clear, andexact description.

This invention relates to machines, for the surface finishing of paper,of a class comprising peripherally cooperative rotative cylindersmaintained in pressure one sidewise against another-and having cloth orother appropriate material forming working coverings for the facesthereof which are in conjunction, and between which the paper, topartake of a surfacing or finish corresponding to such face coveringsfor the cylinders, is passed.

A principal object of this invention is to so construct and organize amachine of the general character indicated that the covering orcoverings for the co-acting periph eral portions of one or more of thecylinders may be .practicably constituted by extremely long endlessaprons, to produce cross seam marks in the paper at but infrequentintervals, which aprons, nevertheless, are so mechanically controlledthat they acquire folded. dispositions at locations comparatively nearthe cylinders, and within a comparatively small space.

Other objects of the invention, as hereinafter rendered apparent, areattained in and by the constructions, and arrangement or combination, ofparts embodied in the machine.

The invention is described in conjunction with the accompanying drawingsand is defined in the claims.

In the drawings :Figure 1 is a side elevation of the improved machine,certain appurtenances thereof being shown in vertical section. Fig. 2is' a front elevation of the machine. .Figs. 3 and at represent inelevations at right angles to each other, a provision for thedisplacement of the receptacles in which the long aprons may be disposedfrom working relation to the machine whereby receptacles for otheraprons may be brought to place. Figs. 5 and 6 are diagrammatic "iewsshowing modifications or entensions of the idea of means comprisedwithin the present invention and hereinafter described.

In the drawings, 1 and 2 represent cylinders of the general character ofcalender rolls mounted in suitable hearings in the machine frame A, thelower cylinder being represented as journaled in fixed bearings a, whilethe upper one is journaled in movable bearings a to which cylinderspressure may be applied by the screws [2 having the operating handwheels 6 B represents the driving shaft of the machine having the clutchpulley C thereon and by the pinion d meshing with the gear wheel 6 onthe extendedjournal of the lower to texture or surface character, areeach in their running endless length of several hun-.

fired, or even fully or more than a-thousand,

eet.

For the imparting to the paper to be finlshed a cloth-like surface, theaprons are made of textile material, either comparatively fine or coarseas required for the nature of the work to be performed in the machineand by making theaprons extremely long, more or less nearly as abovestated, the transverse seam mark in each of the aprons will be broughtto its working relation between the peripheral cooperative cylinders ofthe machine.

Means comparatively close to the cylinders are provided for causing adisposition of the portions of the aprons which are away from thecylinders in reversed loops or folds and within small space for theoccupancy thereof; and to this end I provide upwardly open receptacle Fand F adjacent, and one above, and the other below, the cylinders. lheseupwardly open receptacles are rounded at the side and bottom thereof andare supported in stationary positions in any suitable manner, one, forinstance, being by brackets h suspended from the ceiling, and the otherby brackets hrsuspended below the floor, which latter is apertured forthe free run of the lower apron by one course thereof to and into thereceptacle and by the other course thereof out and away from the latter.

i, z' 'and 71? represent rods or high tension rolls for the course ofthe apron running from the upper receptacle to a half encircL ingengagement down and around the upper cylinder 1; and i and 2' representa pair of positively driven feed rolls having their location near theopen edge of the receptacle at the side thereof for the incoming of thetape. These feed rolls are geared together, and one thereof is driven inany suitable manner, as by a driving band 11 running around a pulley ithereon and driven by a pulley i on a line shafting. These as shown aresupported on the receptacle F.

A roll or other guide for the course of the apron D which has itsreturning course to the receptacle F is represented at 11 Located inrelation to the course of the apron D running from the receptacle F tothe upper cylinder and adjacent the latter is a device for the lateralexpansion of the apron whereby it will run, comparatively v taut andunwrinkled in its width, to the cyl:

inder. And this device which is represented by G in the stated situationis what may betermed as a curved surfaced herringbone plate, the ribs orserrations from the middle to one end thereof being inclined reverselyto those comprised between the middle and the other end of the plate sothat under the tendency exerted by the reversed ribs or serrations tooutwardly spread the apron passing thereover the desired effect isaccomplished.

The apron the receptacle F to and with a half encircling engagementaround the lower cylinder 2 has provided therefor the tension rods orguide rolls adjacent the lower cylinder 2; and in position to be roundedby the course of the apron E running to such cylinder isa device Gr tohave thesame operative or expanding effect on the apron as the a pulleyabove mentioned one G. This is represented as what is commercially knownas a barrel expander, and in itself not my invention, it being mentionedas to its nature, however, that it comprises a rotative cylinder havingblades or slates sinuously or 'helically arranged around the roll andinternal means for distending such blades at the side in engagement withthe apron or belt running thereover and retracting them at the oppositeside. This barrel expander is shown as having on its shaft Gr a pulleyis around which runs a driving band 10 driven from k fixed onthe drivingshaft of the machine.

Adjacent the open-edge of the receptacle F at which the course of theapron E-enters on its return from the cylinder 2 are a pair ofpositively driven feed rolls 7'' and 9' the E for its course runningfromthe shaft G of the rotative expander, and.

expanding devices G and G of different spe-' cific characters, but bothhaving substantially the same operative effect, it is to be here statedthat both expanders may be of herringbone-plate type, or both may be ofthe rotative blade and barrel type.

In Fig. 1, H represents a supply roll of paper to be surface finished, Hrepresenting supporting brackets therefor, and'J represents the take-upor winding roll of the paper; J? represents the supporting brack etstherefor, and 00 represents the course of the paper running from. thesupply to the take-up roll between the cooperative cylinders and theaprons forming continuously running or working faces of such cylinders.

Each endless apron of the extreme length heretofore emphasized, uponbeing positively drawn at the receiving side of the' curve-bottomedreceptacle and precipitated thereinto will automatically dispose itself.into reversed folds as measurably indicated lot of the paper, only oneof the aprons is employed in conjunction with one of the cylinders.

The machine may be adapted or equipped for imparting repeated surfacefinishings'on one or both sides of the paper, and it may also be adaptedor equipped for imparting a surface finishing action several times toone side of the paper and a lessened number of surface finishing actionsto the other side;

and in this connectionreference is made tothe diagrammaticview, Fig. 5,wherein the cylinders 1, 2, 3 and 4 are represented, aroundand betweenwhich run the aprons D and E, the paper guidance being such as toreceive two surface finishings on both of'the sides thereof.

The paper being subjected to the action of but three cylinders willreceive double surface finishings on both of its sides, while if thenumber of cylinders were increased, a corresponding increased number offinishings on both sides would be acquired.

around and between all of which one of the aprons has its runningcourse, while the other apron E is by the guide rolls m n,

after partially encircling the cylinder 1 diverted from its coursearound and between the cylinders 2, 3 and 4 and again carried onlybetween the cylinders 4 and 5. Under this arrangement the paperr..ceives the four finishings on its top side and but two on its underside; and, of course, variations may be made inthe number of thecylinders and the running arrangements'of the aprons whereby otherrelatively excessive surface finishing to one side is acquired beyondthat imparted to the other side of the paper. Such variations of finishare often very desirable especially of what is known as cover papers,blotting paper and some other grades.

The cylinders of the set, of whatever number, may be composed of steel,chilled iron. or other metal, cotton, paper, husk or other fibrousmaterial or a mixture of materials whereby the cylinders are hard andunyieldin g, or possessed of more or less resiliency or elasticity.

Cylinders of one or more of the kinds as just referred to may beemployed in the machine as found best adapted to meet the surfacefinishing requirements thereof.

Indication is made in Figs. 3 and 4 of the manner in which receptaclesfor the accommodation, compactly of the aprons are movably supported sothat one may be displaced from its working relation to the machine Iproper to permit another one of the receptacles to be brought to workingposition.

- L represents atrackway from which by the trolleys or wheels 0 carriedby the brackets p secured on the opposite sides of the receptacle, thelatter has a suspension and running support.

Assuming that it is desirable to substitute for use in the machine anapron carried in one of the receptacles by another carried in a similarreceptacle therefor, the one apron is disconnected at its transverseseam and.

run into its receiverwhich is then moved along on the trackway (thedriving band for the receptacle-carried feed rolls being, ofcourse,temporarily disconnected), and then the other apron and its carryingreceptacle is brought to place, the ends thereof carried in relation totheir guiding means and to the cylinders and joined or seamed.

I claim 1. In a machine for surface finishing paper, in combination,adjacent, peripherally coacting cylinders under pressure, an endlessapron running around one of the cylinders and having long courses, andbetween which cylinders and apron the paper to be finished is passed,and means comparatively close to said cylinders for causing adisposition of the apron in reversed folds, whereby the machine in itsentirety and comprising such long apron requires but comparatively smallspace of occupancy.

2. In a machine for surface finishing paper, in combination, adjacent,peripherally coacting cylinders under pressure, a pair of endless apronshaving long courses and running around the respective cylinders andbetween which cylinders and their appurtenant aprons the paper to befinished is passed, and means comparatively close to said cylinders forcausing dispositions of i the aprons in reversed folds. 3. In a machinefor surface finishing paper, in combination, adjacent, peripherallycoacting cylinders under pressure, an endless apron running around oneof the cylinders and having long courses, and between which cylindersand apron the paper to befinished is passed-,means comparativelyclose tosaid cylinders for causing a disposition of the apron in a multiplicityof reversed folds or loops, means, between the apron folding means andthe cylinder to which it is appurtenant, for imparting a transverselyexpanding tension to the apron.

4. In a machine for surface finishing paper, in combination, adjacent,peripherally coacting cylinders under pressure, an endless apron runningaround one of the cylinders and having long courses, and between whichcylinders and apron'the paper to be finished is passed, an upwardly.open receptacle adjacent the cylinders within which the apronWill assumea disposition in reversed loose folds or plaits, and guiding means forthe apron.

5. In a machine for surface finishing paper, in combination, adjacent,peripherally coacting cylinders under pressure, endless aprons havinglong courses and having running engagements around the cylinders andbetween which apron engaged cylinders the paper to be finished ispassed, upwardly open receptacles suitably adjacent the cylinders-within which the aprons will assume dispositions in reversed loosefolds or plaits, and means for guiding the courses of the endlessaprons, from the cylinders to the receptacles, which comprise positivelydriven feed rolls. v

6. In a machine for surface finishing paper, in combination, adjacent,peripherally coacting cylinders under pressure, endless aprons havinglong courses and having running engagements around the cylinders andbetween which apron engaged cylinders and apron the paper to be finishedis passed, upwardly open receptacles adjacent the cylinders within whichthe aprons will assums a disposition in reversed loose folds or plaits,positively driven rolls for exerting a feeding action of a course ofeach apron from the cylinder with which it has its running engagementinto its receptacle, and means for guiding the othercourse of each apronfrom its receptacle to its cylinder.

7 In a machine for surface finishing paper, in combination, adjacent,peripherally coacting cylinders under pressure, an endless apron havinglong courses running around one of the cylinders and between whichcylinders and apron the paper to be finished is passed, an upwardly openreceptacle adjacent the cylinders, means for guiding the apron into andaway from the receptacle, whereby it will assume a disposition thereinin reversed loose folds or plaits,

and a support for the receptacle on which it finished is passed, anupwardly open receptacle adjacent the cylinders within which the apronwill assume a disposition in reversed loose folds or plaits, means forguiding the apron into and away from the receptacle and a trackway andtrolleys running thereon and by which the receptacle is movably carried.

9. In a machine for surface finishing paper, in combination, adjacent,peripherally coacting cylinders under pressure, endless aprons havinglong courses and having running engagements around the cylinders,upwardly open receptacles suitably adjacent the cylinders within whichthe aprons will assume dispositions in reversed loose folds or plaits,coacting rolls, carried by the receptacles, for feeding courses of theaprons for their entrance into the latter, and means for positivelydriving such feed rolls.

10. In a machine for surface finishing .paper, in combination, adjacent,peripherally coacting cylinders under pressure, endless aprons havinglong courses and having running engagements around the cylinders,upwardly open receptacles suitably adjacent the cylinders within whichthe aprons will assume dispositions in reversed loose folds or plaits,coacting rolls, means carried by the. receptacles, for feeding coursesof the aprons for theirentrance into the latter, means for positivelydriving such feed rolls,

and supports on which the receptacles are movably mounted. I

11. In a machine for surface finishing paper, in combination, aplurality of adjacent peripherally cooperative cylinders, un derpressure and rotatively-driven, long endless aprons running around'saidcylinders, and having the courses thereof brought to facewise relationsand compression between .one of said cylinders and the next, andbetween'and subject to which the paper to be finished is to be passed,and means comparatively close to said cylinders for causing adisposition of the portions of the'respective aprons which'are away fromthe cylinders in reversed loops or folds.

12. In a machine for surface finishing paper in combination, upper andlower cylinders and one or-more cylinders intermediate-therebetween, allrotatively driven and peripherally cooperative under pressure, a pair oflong endless aprons running around said cylinders, and having thecourses thereof brought to facewise relations and compressions betweencylinders of the said set and between which the paper to be finished isto be passed, one of said aprons having guiding means therefor,relativelyto the cyl-,

inders whereby it has a less number of impingements by and betweenadjacent pairs of the cylinders than the number of such impingements towhich the other. apron is subjected, and means comparatively close tothe cylinders for causing dispositions of the aprons in reversed foldsor loops.

13. In a machine for surface finishing paper, in combination, outwardlylocated cyl' inders, and a plurality of cylindersrelatively'intermediately located between the outer ones, and eachcylinder of the series being peripherallycooperative, under compression,with the one next thereto, and all rotatively driven, and endlessaprons, one thereof running around, subject to impingement between allof the cylinders, and the other thereof being guided to have runningengagement around and impingement by a less number of the cylinders.

Signed by me at Springfield, Mass, in presence of two subscribingwitnesses.

PAUL W. BIDWELL.

